PST's Pressure Sensitive Tab allows you to control the release of scent in two ways. Create a scent trail to your stand, or freshen your hunting site without leaving your tree with the "spray-on-demand" feature. For long lasting, maximum attraction, place the container on the ground and depress the tab until it locks. This method allows the entire can to empty, canvassing the surrounding foliage with scent and luring deer from their bedding areas and thick brush. Great for bowhunters needing a close shot at wary game. Plus, each bottle of PST contains 100% natural urine.